Product Description

The Chicago-Latrobe 759 series short length drill bit is made from carbide with an uncoated (bright) finish and has a 118-degree 4-facet point for durability and accuracy when used on a range of hard materials. The short length provides rigidity and strength to reduce tool deflection and breakage. Solid carbide is harder than high-speed or cobalt steel to provide better wear resistance and to prolong tool life at high speeds. The uncoated finish provides an untreated surface. The self-centering 118-degree 4-facet point provides durability and accuracy to prevent unintended tool movement when puncturing the material (walking) and to penetrate the material more easily than a conventional point. The round shank accommodates most drill chucks.Drill bits are cutting tools used to make holes in a range of materials using machines such as handheld portable drills, machining centers, and lathes. Drill bits come in a variety of lengths and types, the most common of which is the twist drill bit. The round, twisted shaft of the twist drill bit typically has two cutting edges and flutes. The helical twist of the flutes brings chips up and away from the cutting edges and allows for coolant to reach the cutting edges. Jobber length twist drill bits, the most common length of twist drill bit, offer a good compromise of length and reach for the widest range of materials and applications. Mechanic's length twist drill bits (also called maintenance length) are a little shorter than jobber length and less prone to deflection when drilling. Short length twist drill bits (also called stub or screw-machine length) are the shortest and stiffest twist drill bits, helping to reduce the chance of deflection or breakage when drilling. Reduced shank twist drill bits (also called Silver and Deming drill bits) have a shank that is smaller in diameter than its shaft, permitting drilling machines with a 1/4", 1/2", or 3/4" drill chuck to create large holes. Long length twist drill bits (also called taper length) are a little longer than jobber length, allowing for deeper holes and longer reach. Extra-long length twist drill bits (also called extension) are longer than long length twist drill bits for greater reach or for drilling deeper holes.Chicago-Latrobe manufactures drill bits and accessories, reamers, countersinks, and blanks. The company, founded in 1890 and headquartered in Clemson, SC, meets International Organization for Standardization (ISO) standard 9001.